Stallings theorem about ends of groups (source code)

= Stallings theorem about ends of groups
{wiki=Stallings_theorem_about_ends_of_groups}

Stallings' theorem concerns the structure of finitely generated groups in relation to their ends. In topology, the "ends" of a space can intuitively be understood as the number of "directions" in which the space can be infinitely extended. For groups, ends are related to how a group's Cayley graph behaves at infinity.